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Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15.
Find the probability that a randomly selected adult had an IQ greater than 131.5 (the requirement for membership in the Mensa organization). Round to the nearest thousandth.
a candy company distributes boxes of chocolates with a mixture of creams toffees and cordials. suppose that the weight
for the funtion fx6x2 make a table of slopes of secant lines and make a conjecture about the slope of the tangent line
A metropolitan school system consists of three school districts-norths, south, central. The north district contains 25% of all students, the south district contains 40%, and the central district contains 35%.
a random sample of n 36 measurements is selected from a population with mean equal to 5 and standard deviation 3. what
While not busy covering local football games and wedding receptions, the reporter has designed and taken simple random samples of regular unleaded gas prices at 35 stations in Minneapolis and 35 in St. Paul.
If 9 loads are chosen at random for a weight check, find the probability that the mean weight of those loads is less than 47.6 tons. Assume that the variable is normally distributed.
a researcher is testing a possible carcinogen on mice. he chooses 8 mice at random from a batch of 13 mice. unknown to
In a shipment of 56 vials, only 13 do not have hairline cracks. If you randomly select one vial from the shipment, what is the probability that it has a hairline crack?
Do you think that these types of statistics can ever be accurate? How could this statistic be biased? In what ways could scientists misinterpret the results of their studies and come up with an incorrect statistic? What are your thoughts?
Where should the warranty limits be set so that only 10 percent of the HDTVs need repairs at the manufacturer's expense?
the number of hybrid cars that have be requested for rental from a car rental office during a 50 day sample period is
when circuit boards used in the manufacture of compact disc players are tested the long-run percentage of defectives is
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